Re: Not a moped, but - Yamaha U5 - Newport

Deadped Ryan /
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They're the bomb diggity.

True rotary valve engine. Super fast and reliable. I'd buy one in a heart beat if I could find one for reasonable.

What you should do is mess with your intake timing (tune the rotary valve), put a chamber on the stock header, jet it and port the stock cylinder. They're cast iron, so no stupid fucking plating to worry about.

You can flow plenty enough air through the stock inlet and carb.

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Subject Written By Posted
  Not a moped, but - Yamaha U5 - NewportTopic by: Brent Bublitz Brent Bublitz 08/16/15 12:18AM
  Re: Not a moped, but - Yamaha U5 - NewportRe: Bob Selby Bob Selby 08/16/15 08:41AM
  Re: Not a moped, but - Yamaha U5 - NewportRe: Ben Whittle Ben Whittle 08/16/15 11:40AM
  Re: Not a moped, but - Yamaha U5 - NewportRe: kevin Smellaflange kevin Smellaflange 04/30/19 03:57PM
  Re: Not a moped, but - Yamaha U5 - NewportRe: Eero W Eero W 08/16/15 12:04PM
  Re: Not a moped, but - Yamaha U5 - NewportRe: Rodger Will Rodger Will 08/19/15 11:55AM
  Re: Not a moped, but - Yamaha U5 - NewportRe: Deadped Ryan Deadped Ryan 08/24/15 08:36AM
  Re: Not a moped, but - Yamaha U5 - NewportRe: Charles Cole (OFMC) Charles Cole (OFMC) 08/25/15 09:57PM
  Re: Not a moped, but - Yamaha U5 - NewportRe: Stan Henderson Stan Henderson 01/16/18 02:17PM
  Re: Not a moped, but - Yamaha U5 - NewportRe: Born to be WillD Born to be WillD 01/17/18 05:01PM
  Re: Not a moped, but - Yamaha U5 - NewportRe: Brian Adams Brian Adams 10/28/19 10:59PM
  Re: Not a moped, but - Yamaha U5 - NewportRe: P8R . P8R . 01/16/18 04:03PM
  Re: Not a moped, but - Yamaha U5 - NewportRe: Chris Szuba Chris Szuba 04/26/19 06:31AM
  Re: Not a moped, but - Yamaha U5 - NewportRe: Chris Szuba Chris Szuba 04/27/19 08:12AM
  Re: Not a moped, but - Yamaha U5 - NewportRe: P D P D 04/27/19 10:37AM
  Re: Not a moped, but - Yamaha U5 - NewportRe: Chris Szuba Chris Szuba 04/29/19 10:33AM
  Re: Not a moped, but - Yamaha U5 - NewportRe: Born to be WillD Born to be WillD 04/29/19 01:36PM
  Re: Not a moped, but - Yamaha U5 - NewportRe: kevin Smellaflange kevin Smellaflange 04/27/19 05:54PM
  Re: Not a moped, but - Yamaha U5 - NewportRe: Chris Szuba Chris Szuba 05/02/19 10:36AM
  Re: Not a moped, but - Yamaha U5 - NewportRe: Chris Szuba Chris Szuba 07/18/19 08:20AM
  Re: Not a moped, but - Yamaha U5 - NewportRe: Michael Smith Michael Smith 11/01/19 08:49PM
  Re: Not a moped, but - Yamaha U5 - NewportRe: Bob Selby Bob Selby 11/03/19 09:47AM

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